Sleepy Circuits Mezzz - Haptic Bluetooth MIDI controller

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via this Reverb listing

Demo in the listing (previously posted here, additional posts here).

"Excellent condition. Updated early 2026

Works perfectly. Low use

Handheld class compliant BLE MIDI controller

Haptic Notch knobs provide physical feedback when dialing in parameters

Central RGB eye segment display ensures you're never lost

Side buttons for channel selection

3D accelerometer, Internal Momentum Unit sends gestural data

2000mAh Battery

USB-C Rechargeable

Special integration with other Sleepy vidOS devices and works as class compliant MIDI controller"